The Festi botnet, also known by its alias of Spamnost, is a botnet mostly involved in email spam and denial of service attacks.
History and operations
The Festi botnet was first discovered around Autumn 2009. At this time it was estimated that the botnet itself consisted of roughly 7004250000000000000♠25000 infected machines, while having a spam volume capacity of roughly 2.5 billion spam emails a day. More recent estimates - dated August 2012 - display that the botnet is sending spam from 7005250000000000000♠250000 unique IP addresses, a quarter of the total amount of 1 million detected IP's sending spam mails. Besides being capable of sending email spam, research into the Festi botnet demonstrated that it is also capable of performing denial of service attacks.
References
Festi botnet Wikipedia(Text) CC BY-SA